(30%) 3. A cantilever beam is used as part of a machine element carrying a load of 10,000 lbs at its end as shown in the figure below. In practice, however, the deflection at the end point was observed to be excessive. A designer suggested using a support at point B. The effect of the support is that the deflection at point B will be zero. In order to design the support structure, we need to determine the force provided by the support. Please use Castigliano's theorem to find this force and neglect transverse shear. 10,000 Lbs. 0.5' C A k B 0.2'